OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*
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* edma_test.c
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*
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* brief EDMA3 Test Application; M- v5 {% D2 m. B2 S, O I' M
*
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* This file contains EDMA3 Test code.1 r% v/ S5 P/ j- o7 n& ]
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% I6 p0 B# p1 g4 G( _
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.) k4 h& B# \: E0 P' Q
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2." m) I( O, F8 H" T
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 M$ z6 E! Y0 n6 r9 I
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>" {6 x5 R9 R# s9 n5 W5 j. m) z
#include <linux/init.h>9 d l0 @6 g6 k; M, I8 V/ J
#include <linux/errno.h>5 ^3 [6 |1 B& }
#include <linux/types.h>
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#include <linux/interrupt.h>$ F2 Y; y) P/ t! a" t. _
#include <asm/io.h>5 t4 y! G N) a) F* s
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>) }; K( Y: J7 K* }
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#include <mach/memory.h>& k" T# F+ ]& ] C6 z. s
#include <mach/hardware.h> C: E1 Q; V6 ^6 F' o% t
#include <mach/irqs.h>8 T9 \4 W$ v4 u. V0 E1 G( ~
#include <asm/hardware/edma.h>* s J6 h, d5 M) Z) Y4 E [
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)& s7 x8 ?9 m4 g4 v) V
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else! m1 F3 c$ n, {9 T( X' a
#define DMA_PRINTK( x... )$ ?& e. w4 P1 F" q* |* ?7 p9 x- b1 t( X
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif/ V$ P" o6 X+ j1 h8 r* E1 O s. y) {
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3! d( b/ t5 ^7 n4 k' z$ Y% `) S( t% l
#define TCINTEN_SHIFT 204 e2 H6 E5 d+ L$ P2 c& b
#define ITCINTEN_SHIFT 21. ~% i. `6 b2 E( ?) k5 `+ `
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23: ]! d' b& j1 G' u) v* ^# J) r; |% j
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( o. R( v# {% X6 U& T
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& d3 u* q' h/ \ t9 r W
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dma_addr_t dmaphyssrc1 = 0;. }( k6 V5 f. i* e3 b/ I
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;. c3 p8 Q4 e0 V& Z! B$ k) d
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;8 H$ P; a7 J( O/ \8 N9 v, d% ?
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;8 F0 w0 g {' G: Y4 G. a$ W8 O& A+ W
static int bcnt = 8;
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static int ccnt = 8;5 Z C* ^5 v3 s/ ^& A2 m4 A# q
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module_param(acnt, int, S_IRUGO);6 N' }% t; x; X& u/ ^
module_param(bcnt, int, S_IRUGO);8 C7 C8 }5 ]" r- k8 |7 I" g E
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动